Add/edit documentation for multiple options capture

[tanuprasad530]

This is a temporary solution to capture multiple responses. We have an existing documentation linked here that can be used to capture multiple responses but this can be optimized further using regex(minimizing the number of validations) to be added .

However, below are few caveats to this:

• If the user wants to customize the flow based on the variety of this multiple choices, this approach needs to be thought through further.
• How and if we can use this for more than 10 options?